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Wheel brake assembly
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Patent number 4,815,679
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Issue date Mar 28, 1989
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John C. Perry
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B60 - VEHICLES IN GENERAL
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Vibration actuated liquid pump
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Patent number 4,416,589
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Issue date Nov 22, 1983
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John C. Perry
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Positive displacement pump
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Patent number 4,412,786
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Issue date Nov 1, 1983
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John C. Perry
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Vibration actuated liquid pump
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Patent number 4,406,587
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Issue date Sep 27, 1983
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John C. Perry
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Flexible enclosed shaft
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Patent number 4,362,520
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Issue date Dec 7, 1982
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John C. Perry
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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